Wordpress Timber merge terms from two taxonomies - wordpress

I see that Timber will allow a merged list of terms from all taxonomies. But is there a way to merge a list from two taxomomies?
This code works for me:
{% for term in post.terms('topics') %}
This works, but loads only the first taxonomy listed:
{% for term in post.terms('topics','regions') %}
This fails:
{% for term in post.terms(array('topics','regions')) %}
In a merged list, preferably with a sort by alpha. The Timber docs give these instructions terms($tax = 'any', $merge = true) and show how one taxonomy can be specified (default is "all") but not how two might be specified.


#slam I think you just need to use Twig's array syntax to make this work:
{% for term in post.terms(['topics', 'regions']) %}
Give that a shot and lemme know!

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Drupal 8 get value of a custom field that has multiple value

I'm developing a site with Drupal 8. I made a custom content type, with a lot of fields; in particular I have a field called "field_categoria_del_libro_presen" that is linked to a taxonomy term. It's possible to specify more than one value. I used kint() to obtain the structure of the node. Here:
field_categoria_del_libro_presen
→array(2)
target_id
1
"1"
2
"4"
I attached the screenshot too.
screenshot
How can I get the value "1" and "4" that represent the terms of my taxonomy?
Thank you so much in advance.
Regards.
Valentina
ANOTHER QUESTION UNSOLVED:
how can I get the length of the array?

I found a solution. So I answer my question.
{{ node.field_categoria_del_libro_presen.0.target_id}}
{{ node.field_categoria_del_libro_presen.1.target_id}}

According to your self provided answer I guess you're talking about how to get the value in a twig template. Well generally speaking if you want to get the length of an array you can use the "length" filter. It looks like this:
{{ someArray|length }}
And regarding your original question, if the number of selected values varies and you want to display them all I would suggest using a for loop, it looks like this:
{% for arrayElement in someArray %}
{{ arrayElement.someKey }}
{% endfor %}
For more information look here: http://twig.sensiolabs.org/doc/tags/for.html
and here:
http://twig.sensiolabs.org/doc/filters/length.html

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In a form, I dynamically define the fields in a controller. Then in the TWIG I would like to use form_widget to output the fields.
The normal approach, when knowing the fields is like shown bellow:
{{ form_widget(form.field1) }}
In this case, we cannot know whether we will have a field1, field2, etc. on beforehand. Though we have the field names in a variable called key.
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You can do something like
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I'm setting up a search page by views exposed filter. And one of the field are filter by taxonomy term.
For example, when I search with the taxonomy term filter field, the URL is like below.
domain.com/search?subjects=69
Now I wish to get the value of the taxonomy (it's showing tid instead of value)
<?php
$idenity = $_GET['subjects'];
print $idenity;
?>
Anyway to get the value of the taxonomy value but not taxonomy id?

You didn't specify which version you're using so I'm assuming Drupal 7 because it's the latest stable version.
You can load the term with taxonomy_term_load():
<?php
$tid = intval($_GET['subjects']);
$term = taxonomy_term_load($tid)
print $term->name;
?>
Personally, I find that the comments on the Drupal API site are usually very helpful in understanding how to use functions that sound like they are relevant to my problem.

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